IT1262035B - Instrument for the direct measurement of the reverberation time of an environment, and process for applying the said instrument - Google Patents

Instrument for the direct measurement of the reverberation time of an environment, and process for applying the said instrument

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Publication number
IT1262035B
IT1262035B ITRM930679A ITRM930679A IT1262035B IT 1262035 B IT1262035 B IT 1262035B IT RM930679 A ITRM930679 A IT RM930679A IT RM930679 A ITRM930679 A IT RM930679A IT 1262035 B IT1262035 B IT 1262035B
Authority
IT
Italy
Prior art keywords
instrument
acoustic
acoustic energy
direct measurement
instant
Prior art date
Application number
ITRM930679A
Other languages
Italian (it)
Inventor
Eleonora Carletti
Patrizio Fausti
Domenico Stanzial
Ivano Vecchi
Original Assignee
Consiglio Nazionale Ricerche
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Consiglio Nazionale Ricerche filed Critical Consiglio Nazionale Ricerche
Priority to ITRM930679A priority Critical patent/IT1262035B/en
Publication of ITRM930679A0 publication Critical patent/ITRM930679A0/en
Publication of ITRM930679A1 publication Critical patent/ITRM930679A1/en
Application granted granted Critical
Publication of IT1262035B publication Critical patent/IT1262035B/en

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  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Abstract

Instrument and process for the direct measurement of the reverberation time, based on the determination of the acoustic energy density decay time. The said instrument consists essentially of analog-digital converters ADC, banks of digital filters DF, adders SIGMA, etc. To measure the three components of the velocity vector (Fig. 1) it is possible to use, for example, six phase-coupled microphones, each pair being located along one of the three orthogonal directions. The processing time of the six pressure signals obtained from the microphones must be less than the period corresponding to the frequency of sampling the signals acquired in the acoustic range which is to be analysed. By measuring the acoustic energy density instant by instant, it is thus possible to determine its decay time by following the known methods for evaluating the impulse response of the acoustic system. The invention relates to the technical field of acoustics and can be appropriately applied in the field of acoustic monitoring instruments. The invention constitutes an advance, especially in the systems of monitoring the acoustic energy absorption properties of environments. <IMAGE>
ITRM930679A 1993-10-07 1993-10-07 Instrument for the direct measurement of the reverberation time of an environment, and process for applying the said instrument IT1262035B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ITRM930679A IT1262035B (en) 1993-10-07 1993-10-07 Instrument for the direct measurement of the reverberation time of an environment, and process for applying the said instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRM930679A IT1262035B (en) 1993-10-07 1993-10-07 Instrument for the direct measurement of the reverberation time of an environment, and process for applying the said instrument

Publications (3)

Publication Number Publication Date
ITRM930679A0 ITRM930679A0 (en) 1993-10-08
ITRM930679A1 ITRM930679A1 (en) 1995-04-07
IT1262035B true IT1262035B (en) 1996-06-18

Family

ID=11401999

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM930679A IT1262035B (en) 1993-10-07 1993-10-07 Instrument for the direct measurement of the reverberation time of an environment, and process for applying the said instrument

Country Status (1)

Country Link
IT (1) IT1262035B (en)

Also Published As

Publication number Publication date
ITRM930679A0 (en) 1993-10-08
ITRM930679A1 (en) 1995-04-07

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Legal Events

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971029